Clarissa's closure example exercise solution

closure.js

function makeCounter () {
    var counter = 0;
    var commands = [];
    return function (str) {
        if (str === "inc") {
            counter = counter + 1;
            commands.push("inc");
            return counter;
        } else if (str === "dec") {
            counter = counter - 1;
            commands.push("dec");
            return counter;
        } else if (str === "ops") {
            return commands.length;
        } else {
            return counter;
        }
    }
}

var counter = makeCounter();

console.log(counter());
console.log(counter("inc"));
console.log(counter("dec"));
console.log(counter("ops"));